B. Fongo wrote:
I want to use mkdir(blah blah, o777), but want to first find out whether the directory "blah blah" exists.
I'm not if the -e option will bw right here. Let's say:
unless (-e blah_blah) mkdir(blah_blah, 0777); # Is this okay?
In general -e checks for file existence, -d checks to see if an existing file is a directory (or complains that the file doesn't exist).
perldoc -f -e
So your above code leaves a condition, where blah_blah exists but is *not* a directory which is likely to cause you problems. But since you haven't told us what happens in this failure case it is hard for us to say, but,
if (-e blah_blah) {
unless (-d blah_blah) {
die "File exists but is not directory";
}
}
else {
# don't forget to check mkdir's failure
mkdir(blah_blah, 0777) or die "Can't make directory: $!";
}HTH,
http://danconia.org
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